/**
 * The MIT License
 *
 * Copyright (c) 2010-2011 Sonatype, Inc. All rights reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */

package org.hudsonci.rest.client.internal.ext;

import javax.inject.Inject;

import javax.ws.rs.core.UriBuilder;

import org.hudsonci.rest.client.HudsonClientException;
import org.hudsonci.rest.client.ext.NotificationClient;
import org.hudsonci.rest.client.internal.HudsonClientExtensionSupport;
import org.hudsonci.rest.client.internal.cometd.BayeuxClient;
import org.hudsonci.rest.client.internal.cometd.BayeuxClientFactory;

import java.net.URI;

import static com.google.common.base.Preconditions.checkNotNull;

/**
 * {@link org.hudsonci.rest.client.ext.NotificationClient} implementation.
 *
 * @author <a href="mailto:jason@planet57.com">Jason Dillon</a>
 * @since 2.1.0
 */
public class NotificationClientImpl
    extends HudsonClientExtensionSupport
    implements NotificationClient
{
    public static final String BASE_COMETD_PATH = "cometd";

    private final BayeuxClientFactory clientFactory;

    private BayeuxClient bayeuxClient;

    @Inject
    public NotificationClientImpl(final BayeuxClientFactory clientFactory) {
        this.clientFactory = checkNotNull(clientFactory);
    }

    //
    // FIXME: The client ext stuff was only designed for REST bits, so the use/req of uri() is very hacky
    //

    @Override
    protected UriBuilder uri() {
        return UriBuilder.fromUri(getClient().getBaseUri()).path(BASE_COMETD_PATH);
    }

    @Override
    public void close() throws Exception {
        if (bayeuxClient != null) {
            bayeuxClient.disconnect();
            bayeuxClient = null;
        }
    }

    //
    // FIXME: Probably want to expose a better API, but for now just expose the underlying client
    //

    public BayeuxClient getBayeuxClient() {
        // Lazy-init the client for now... so it will only consume resources when the feature is needed
        if (bayeuxClient == null) {
            BayeuxClient c;
            try {
                URI uri = uri().build();
                c = clientFactory.create(uri, getClient().getOptions());
                c.start();
                bayeuxClient = c;
            }
            catch (Exception e) {
                throw new HudsonClientException(e);
            }
        }
        return bayeuxClient;
    }
}
